.erweima{
    width: 120px;
    height: 120px;
    margin:50px auto;
    border: 1px solid #000;
}
.erweima>img{
    width: 100%;
    height: 100%;
}
.share-box{
    width: 100%;
    height:140px ;
    background: #efeff4;
    position: fixed;
    bottom: 0;
    z-index: 100;
    display: none;
}
.share-box>div{
    display: flex;
    padding: 10px 20px 2px 20px ;
    text-align: center;
    justify-content: space-around;
    border-bottom: 1px solid #999;
}
.share-box>div>div{
    width: 80px;
    text-align: center;
    font-size: 14px;
}
.share-box>div>div>img{
    width: 60px;
}
.share-box>a{
    display:block ;
    background-color: #efeff4;
    width: 100%;
    color: #666666;
    text-align: center;
    font-size: 18px;
    line-height: 48px;

}
.btn{

    margin:0 5%;
    width:90%;
    height: 40px;
    color: #fff;
    font-size: 16px;
    background-color: #000;
    border-radius: 5px;

}